About Front Panel LED Issues on the Hardware Media Server

This section describes what to do if the LEDs on the front panel of the Hardware Media Server are off at all times, including during the power off and power on cycle.

Table: Resolving Front Panel LED Issues

Possible Causes

Verification Steps

Power supply problem

Make sure that the power supply LED is green.

Check the AC cable and fuse.

The blades are not inserted correctly in the Cisco Unified MeetingPlace 3500 Series Media Server chassis, or a back plane pin is bent.

Open the telecom latch screws and extract the blade from its slot.

Verify that there are no bent pins on the back plane (using a flashlight, if necessary).* Re-insert the blade carefully closing the latches.

About Ethernet Settings for the Hardware Media Server

We recommend the following Ethernet port settings:

Audio Blade

Ethernet Switch Port

Result

Auto-negotiate

Auto-negotiate

1000/Full

Video Blade

Ethernet Switch Port

Result

Auto-negotiate

Auto-negotiate

1000/Full

Application Server

Ethernet Switch Port

Result

Auto-negotiate

Auto-negotiate

1000 Mbps or 100/Full

1000 Mbps

1000 Mbps

1000 Mbps

100/Full

100/Full

100/Full

We do not recommend the following:

Setting one device to auto-negotiate and setting the other device to a fixed configuration

Caution! Setting one device to auto-negotiate and the other device to a fixed configuration will often result in negotiation failure, where one side thinks it has a full duplex link and the other side thinks it has a half duplex link. This will result in intermittent non-specific failures which get progressively worse as the load on the system increases and can result in a complete service outage.

Using 10 Mbps Ethernet

Using half duplex Ethernet at any speed

Using 10/100Mbps for MCU and EMP, nor any hard set values (MCU & EMP tested and certified only on Auto/Auto setting connected to 1Gb switchports)

Misconfigured Ethernet Ports

Problem: An Ethernet port is misconfigured. Symptoms include the following:

Lost audio or video on a call

Dropped calls

Intermittent or no response to ping

On an Audio Blade or Video Blade, intermittent failure to sign in using Telnet or web interface

On the Application Server, intermittent failure to access the command line using SSH, or the Administration Center